Adjustable illuminating-fixture



W. w. Pons.

ADJUSTABLE lLLUlVHNAING FIXTURE.

APPLICATION FILED. APR. 2B, 1919.

. Patented' Jan. 13, 1920.

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WARREN W. POTTS, OF ELKHART, INDIANA.

ADJUSTABLE ILLUMINATING-FIXTURE.

Specification of Letters Patent.

Patented J an. 13, 1920.

Application filed April 28, 1919. Serial No. 293,206.

To all 'whom z't may concern:

Be it known that I, WARREN IV. PoTTs, a citizen of the United States,residing at Elkhart, in the county of Elkhart and State of Indiana, haveinvented certain new and useful Improvements in Adjustable'Illuminating-Fixtures, of which the following is a specification.

The present invention relates primarily to illuminating fixtures, andparticularly to adjustable hangers for electric illuminating fixtures.

The primary object of the invention is to provide an adjustable hangerfor electric illuminating fixtures which is peculiarly adaptable for usein connection with center or domelike fixtures, which are usuallysuspended from the ceiling.

With this and other objects in View, the invention will be more readilyunderstood upon reference to the accompanying drawing and followingdetailed description..

In said drawing- Figure 1 is a vertical section showing 'a part of theelectric fixture, per se, in elevation' Fig. 2 is a cross-section on theline 2 2 of Fig. 1;

Fig. 3 is a cross-section 0n the line 3 3 of Fig. 1; and

Fig. 4 is an enlarged detailed view of the manner of connecting thetelescoping conductor rods to the wiring of the fixture.

Referring to the drawing in detail, the invention primarily involves acenter post l, which is adapted to be suspended vertically from andaffixed to the ceiling by means of the attaching block 2, which issecured to the post in any convenient manner, preferably by ascrew-threaded connection. Slidably mounted on the, post 1 is asupporting means for the light structure, consisting of the casing 3having a block 4 secured in the upper portion thereof, which block isprovided with a central opening to receive the post, and with twosmaller open ings on eachside of the central opening to receive thecasings 5 for the conductor rods 6, which extend through said casingsand terminate near the lower end thereof in telescoping relation to thecasings. These conductor rods pass through the block 2 and are insulatedtherefrom by means of the insulating sleeves 7, and are adapted to beconnected to a suitable source of electricity. The casings 5 areinsulated from the block 4 and the casing 3, and terminate with theirends connected to the wiring 8 of the light structure. This lightstructure may be of any conventional form, such as the inverted bracket9, which is provided with a screwthreaded attaching collar 10 adapted toreceive the threaded end 11 of the block 12, which is mounted in thelower end of the casing 3 and provided with suitable openings to receivethe ends of the casings 5 in a similar manner as the block 4. Thepurpose of the invention is to enable the light structure to be raisedor lowered without breaking the circuit, to which end the post 1 isadapted to telescope within the casing 3; likewise, the rods 6 beingadapted to telescope within the casings 5, and as they are in contacttherewith, the circuit will be completed through the rods and casings tothe wiring 8 of the light structure. To enable any predeterminedadjustment, or rather, selective adjustment of the light structure to behad and retained, a locking device is associated with the casing 3 andthe post l. This locking device consists of a pawl 13, pivotally mountedon a collar 14, which is in turn secured to the block 4 by suitablebrackets 15. As the post 1 telescopes in the casing 3, the pawl isadapted to selectively engage any one of the notches 16 on the side ofthe post and lock the casing 3 with the post, whereby the light fixturewhich is carried by the casing 3 may be vertically adjusted. Arod 17 isattached to the pawl 13 and extends downwardly through the casing 3, theblock 12 and the center of the light fixture, and terminates in a pushbutton 18, which will enable the rod to be actuated to disengage thepawl from any one of the notches 16 and permit adjustment of the lightfixture to be had. A suitable spring 19 is employed to exert thenecessary downward tension on the rod 17 and retain the -pawl 13 inlocking relation to the notches.

The extension of the rod 17 from the lower part of the light fixture isinclosed in a suitable casing 20, which carries a plug 21 on its lowerend, with an opening 22 therein to provide a housing for the spring 19.In order to add a pleasing appearance to the construction, an outercasing 23 is used to telescope with the casing 3. This outer casing issecured to the usual canopy 24 which incloses the rods 6, block 2 andupper part of the post 1' and its associated parts. It is to be notedthat the casing 3 is provided with an extension 25, which is secured tothe light fixture and enables the connection between the wiring 8 andthe conductor casings 5 to be completely housed; also, that an annu larring 26 is provided to prevent the outer casing from marring the surfaceof the casing 3 when the same are telescoped. Furthermore, the end ofthe post l is constructed with an abutment 27 to prevent withdrawal fromthe casing.

Claims:

1. An adjustable hanger for electric illuminating fixtures, comprising aiixed center post, a casing surrounding said post adapted to telescopetherewith, providing a support for the electric fixture, a pair ofconductor rods mounted adjacent said post, a pair of tubes in saidcasing receiving said conductor rods and adapted to telescope therewith,said tubes being insulated from said casing and providing a circuitcompleting means from the conductor rods to the electric fiA ture, saidcentral post having an elongated notched portion along one of its sides,and a clogging device carried by said casing adapted to selectivelyengage said notches, whereby the electric iixture may be verticallyadjusted.

2. An adjustable hanger for electric illuminating fixtures, comprising alixed center post, a casing surrounding said post adapted to telescopetherewith, providing a support for the electric fixtures, a pair ofconductor rods mounted adjacent said post, a pair of tubes in saidcasing receiving said conductor rods and adapted to telescope therewith,said tubes being insulated from said casing and providing a circuitcompleting means from the conductor rods to the electric fixture, saidcentral post having an elongated notched portion along one of its sides,and a clogging device carried by said casing adapted to selectivelyengage said notches, whereby the electric fixture may be verticallyadjusted, and an outer casing surrounding the central post and thefirstnamed casing in telescoping relation therewith.

3. An adjustable hanger for electric illuminating iixtures, comprising axed center post, a casing surrounding said post adapted to telescopetherewith, providing a support for the electric fixture, a pair otconductor rods mounted adjacent said post, a pair of tubes in saidcasing receiving said conductor rods and adapted to telescope therewith,said tubes being insulated from said casing and providing a circuitcompleting means from the conductor rods to the electric fixture, saidcentral post having an elongated notched portion along one of its sides,a rod actuated pawl carried by said casing adapted to selectively engagesaid notches, whereby the electric fixture may be vertically adjusted7and an outer casing sur rounding the central post and the firstnamedcasing in telescoping relation therewith.

WARREN W. POTTS.

